Electrical perforator



J. J. BOYLE ELECTRICAL PERFORATOR May 6 1924. 1,493,014

Filed May 17. 1922 @l @e w i914 Patented May 6, 1924.

" UNITED STATES PATENT 1,493,014 OFFICE.

JOHN J'. Bona, or rmannnrm, PENNSYLVANIA. ELECTRICAL P Earomron.

Application led Iay 17, 1922. Serial No. 561,712.

To all ,whom z'tmuzy concern:

Be it lown that I, JOHN J. Borna, a citizen of the United States,residing in Philadelphia., Pennsylvania, have invented B an ElectricalPerforator, of which the fol-l lowing is a specific-ation.

The object of this invention is to provide.

simple and eicient -means 4for check protection. Y l

In the attached drawing:

Figure l, is a view in diagram of app aratus made in accordance with myinvention;

Fig. 2, is a view in perspective of a modill ication within the scope ofthe invention;

Fig. 3, is a section on the line 3 3, Fig.

2, and

n Fig. 4, is a sectional view of a further` I haveV discovered meanswherebyelectricl` l'ity' .with all its attendantadvantagesmay be usedwlth entire satisfaction and .with a. total elimination of all forcommercial usefulness. In practicing my employ Vapparatus of thetmployed in the So-called violet ray A although .other types. "f high-,frequency apparatus. may'bev employed where found y desirable. Sucha`machine I have lshown digrammatically in Fig. 1 of the dra-wings, itconsisting 'of an induction coil 1, the

primary circuit 2 of which may be connected to anyT Suitable ysourceot'current (not shown),nand thesecondary of which is vconnected with the.primary`4 of a Tesla coil. This4 secondary circuit 'of the inductioncoil, which includes .the primary.',winding' of the Teslaicoil, alsoincludes aseries spark gap' 17 land a condenser .18 in parallel withthev co1 s.- of this Tesla coil the vided the paper by electricity, andthis` havev gone into general use fundamental faults which .Inthiscase,` the. objectionable .5 Y features which hitherto vhavedisqualified itinvention,v I prefer'to machlnes for pro.. 40 'ducing anelectric. current of high fmqumcyA One terminalx5 ofthe secondary 6-other terminal is connected in the present instance to a metal plate 7,a binding post 8 being provided on this plate for that purpose. In thepresent case alsoI have proplate 7 with a spring clip 9 at one sidewhich .is adapted to hold or-other paper form l() to the plate duringthe writing operation.

. In apparatus'of this, it is only necessary to write the check in theusual manner, it

a check being possible to use apen of the ordinary o form. As the ointof t e pen contacts with the material ofp the check, minute dischargesof electricity will pass from the charge vplate 7 through the materialto the point of the pen, ythese discharges perforating the check andcausing the ink to flow through the perforations and into the body ofthe paper.

- These discharges from plate to pen point continue as the pen is movedacro the paper, with the result that the latter is perV oratedthoroughly along the liney of the writ-ing.A

Inorderto prevent the hand of the writei coming into direct contact withthe charged plate, a device such as that 'illustrated in ig,4 2 may beemployed, this consisting of av plate 11 of suitable insulating materialhaving* a slot or opening 12 in which is established fa metalstrip orplate 13, which latter is connectedinthe manner previously described4togthe highv frequency apparat-us.

plate 11` in--such position'th'at the line upon which the marks are tobe made overlies the metal strip 13, the paper being perforated vwhen.the point o the pen comes 1n contact withthefpaper. In this case, how?v(ever, the hand' o the'v writer will rest upon the. platell and need notcome in contact with the -metal plate.

, It will` be apparent that equally satis-y factory results may beobtained by; using a pen the point of which is connected to the highfrequency apparatus instead of the the checkis placed upon thc metalplate upon which thel check is laid.

-A suitable pen for this purpose is shown kin Fig. 3, and may be of theordinary fountain v type having an electrode or conductor 14 extendinginto the well 15 of the pen in such manner as to be continuall connectedby means of a wire 16 to the secondary 6 of the high 'frequencyapparatus. In

1 in contact f with the ink carried therein, t e electrode ..14 beingelectrically thscaseasbef plate beneath.

is subject to one ofthe main faults of the fore, the check is laid upona metal plateA previously developed electrical perforating means, inthat a special vpen is required having the wire. attached thereto, thiswire preventing entire freedom in the manipulation of the pen.

In the apparatus illustrated in Figs. 1 and 2,'y however, and aspreviously stated, any ordinary writing pen may be employed,

the electric circuit, and it being accordingly given the entire freedomwhich is found in any ordinary writing operation. A further considerableadvantage over the prior forms ofv electric perforatmg apparatus is alsofound in the fact that Yalthough the dise.

e charges'are sufiiciently strong to insure a thorough perforation ofthe paper, the character of the discharge is such as ixr nov wayseriously to affect the operator ifhis handl should come in contact withthe plate 7, and it is accordingly unnecessary to exercise anyextraordinary care in `the use of this apparatus to prevent electricshock.

The apparatus will accordingly find universal use by all, and does notrequire special construction or expert handling such as is rietyrequired in the previously developed forms of electric perforatingdevices. The a paratus is a simple one and .is comparative y cheap, andlends itself to a Vvaof modifications and renements to suitany'conditions of use.

I clalm: s

l1. `A marking device comprising spaced electrodes adapted to beenergized by high frequency .electrical energyv and by their motionrelative to an interposed article to define in perforations a line 'onsaid'article of desired configuration.

2. A marking device comprising spaced electrodes, a source of highfrequency'electrical energy adapted to energize 'said' electrodes and tocreate electrical discharges therebetween, and means for 4effecting larelative movement. between said electrodes and an interposed sheettothereby form by reason of s`a1d dischargesl a series of perforations insaid sheet defining aY line o f desired configuration. p f

3. In comb'nation, a sourceof high fre 'quency electrical energy, "acircuit ada ted to be .energized therebv and including tion. f

spaced terminals adapted to have insertedA l therebetween an article tobe perforated -by electrical disehargebetween the terminals, and meansproviding for movement of the terminals with respect to thearticle tothereby form in the article a line of perforations of desiredconfiguration. A

5. In combination, a source of high frequency. electrical energy, 'acircuit adapted to be energized thereby and including a terminal memberhaving an extended Surface; and a .second terminal member adapted to bemoved over and adjacent the said ex-l A tended surface of the first,member, 1t being unnecessary to lnclude'the pen 1n.

6. An electric perforator comprising in combination a source of highfrequency electrical energy, and a circult adapted to be energizedthereby and including spaced.`

terminals constituting a spark gap. '7. A check protector comprising avsource lof high frequency electrical energy, a pen,

and a circuit including said pen and adapted to be energized from saidsource.

8. A-check protector comprisinga source of high frequency electricallenergy, apen, a circuit including said pen and adapted to be energizedfrom said source, and a memberconstituting a second terminal for saidcircuit and a support for an article tov be marked' by the pen. y f f 9.A vcheck protector comprising a source of high frequency electricalenergy, apen,

a grounded circuit including the pen and adapted to be energized .fromsaid source,

and a Imember constituting a second terminal for said'circuit and asupport for an article to be marked by the pen.-v l

10. An electric perforator com rising a V:source of high frequencyelectrica energy,

a' stylus, a clrcuit adapted to be energized leo los.

from the said source and including the l' stylus, and a lterminaladapted with thestylus to form a spark gap in the circuit for insertionof 'an article to be perforated.

11. A 4check protector comprising spacedV electrodes Iconstituting aspark gap, a

source .of high frequency electrical energy adapted to energize. saide1ectrodes,.- and means for directing the electrical discharges at willto form in a check a series of perfora:'

tions defining a line of desired configura- 112. In a check protector,-the-combination with a source of'highfrequency electrical l energy,A ofa circuit energized fromsaid source and including a -spark gap; and'means for directing the spark throughthe body of' a check to form aseries of perforations dening a line of desiredconfiguration.

lio

msr

, 13. The" method of indelible4 markingi, y.

which aconsists in directing .the electrical ,dischargebetween spacedelectrodes energized from a source of high frequency elc# trical energythrough an article to be marked, and moving the electrodes with respectto the article to define by saidperforations a desired marking.

14. The method ofindelible marking,

which consists in -directing the electrical discharge between spacedelectrodes energized from a source of high frequency electrical energythrough an article` to be marked,and,

I articleto be marked intermediate the terminals, and moving theterminals with respect to the article to form in the article a series ofperforations marked by the fluid from the stylus.

16.,In an electric marking device, Ihe

combination with a circuit including means' for establishing a currentof high frequency. of a, grounded circuit operatively'associated withthe first mentioned circuit and including a metallic body having a flatsurface.

17. In an. electric marking device, the combination with a circuitincludingA means or'establishing a. current of high frequency,

Asmooth metallic plate and.

of a circuit operatively associated with the first mentioned circuit andcomprising a -grounded conductor having connection with amet'al plate.

18. In an electric marking device, the combination with a circuitincluding means for establishing a current of high frequency, of acircuit operatively associated with the firstmentioned circuit andincluding a smooth metallic plate.

19. In an electric marking device, the

combination With a circuit includingr means for establishing a currentof high frequency` of a conductor operatively associated with the firstmentioned circuit' and having connecticn with a metal plate.-

20. In an electric marking device, the combination with a circuitincluding means for establishing a' current of high frequency,

of a grounded conductor operatively associated With the first mentionedcircuit and having connectionwith a metal plate.

21. In an electric marking device, the

,combination with a circuit including means for establishing la currentof high frequency, of ay circuit operatively associated with the rstmentioned circuit and comprising a a stylus movable with respect to saidplate. v

JOHN J. Borna

